Sure the money you earn is legal, but it's also legal for the gov't to take it from you and give to the elderly or poor because it's the LAW. Just as IF you had illegal drugs and IF they took them from you, it wouldn't be "robbery" either because such drugs have been deemed illegal based on laws our gov't passed. The analogy is fine, you are just pretending to not understand it or are too dull to get it. In one instance the gov't is "stealing" your $, and in another it is "stealing" your property (your drugs, or weapons in some cases). One could make an argument that either one is "robbery", as you have in one case but chosen not to in another. But in reality neither one is "robbery" . .
Poor analysis # 2 on your part. Because are you endangering people's lives by not paying taxes that contribute to helping pay for needy people's healthcare? Yes. People will die without that $. So based on your "endangering people's lives" test, I guess the taxes that go to Medicaid are are not robbery after all. And you are endangering people's lives just driving period, so who said the gov't has the right to tell you how fast to drive and at what point it becomes dangerous? Oh yeah, they have the right to set laws.
I was simply addressing what you glaringly LEFT OUT of your critique of Medicare. If you bitch and moan about Medicare and only talk about how it bothers you that poor people get subsidized by your taxes, and DON'T complain about the corporate welfare that Big Pharma gets, I can only assume that handouts to the poor bother you a lot more than handouts to the rich. It always works that way with people like you that make such arguments.
If you are going to call yourself "poor analogy" at least understand the differene between good analogies and poor ones, or you will end up sounding like a buffoon.